Introduction:
The presence of gender differences is well known in a wide variety of areas, including employment, education, and income. In most European Union countries, size of the gender differences in tobacco smoking decreases with size of place of residence and education and increases with age until late adulthood. Measures aimed at narrowing the gender gap in socio-economic indicators are justified in the Partnership agreements on the European structural and investment funds which have been signed between the European Commission and member states.

Methods:
This study analyses gender gap in tobacco-smoking behaviours according to the results of a two-wave study Awareness of Cancer and Prevention, which was carried out on a stratified random sample of n=2∙8,000 Poles aged 18+. Cramér’s V was used to assess the size of gender differences. The two-way analysis was followed by propensity score matching.

Results:
According to the propensity score matching, being male currently affects tobacco smoking behaviours in terms of average treatment effect, even when controlling for socio-demographic characteristics, health status, and knowledge of lung cancer prevention. In Poland, in terms of Cramér’s V, the size of gender differences in tobacco non-use had not changed considerably between 2006 and 2014 (16.5 pp and 17.2 pp). The pattern of gender gap in tobacco non-use by size of place of residence and age had remained generally similar. However, a large increase in gender gap in tobacco non-use in the population with higher education was observed between 2006 and 2014 (2.5 pp and 11.8 pp). Men with higher education were the only gender-education group, which recorded a decrease in non-smoking.

Conclusions:
Within the conceptualization by Rosenberg and Hovland (1960), high gender differences apply to the behavioural component of lung cancer prevention rather than affective and cognitive domains. Observed decrease in tobacco non-smoking in men with higher education demands additional actions.